A dense graded base aggregate, produced by crushing and screening air-cooled iron Blast Furnace Slag. A light brown to gray crystalline aggregate formed simultaneously with the production of iron in a blast furnace. The particles are sized from 1 1/2″ (37.5mm) to zero (dust).

The 21AA Blast Furnace Slag should be placed 6″ to 18″ thick depending upon ground conditions and design loadings, in lifts not exceeding 8″. Prior to the placement of any base material, the grade should be compacted and trimmed to the design density & elevations and be free of any standing water and not in a frozen condition. Base material should be compacted at optimum moisture content (approximately 8% to 10%) to 95% to 100% relative density or to the compaction level as specified in the design plans.

Gradation Data:

U.S. Sieve

1 1/2″

1″

3/4″

1/2″

3/8″

#4

#8

LBW

Metric Sieve

37.5mm

25.0mm

19.0mm

12.5mm

9.5mm

4.75mm

2.36mm

Specification

100

85-100

–

50-75

–

–

20-45

4-10

Field Estimating Quantities (Compacted in Place)

100 sq. yd.

200 sq. yd.

500 sq. yd.

1,000 sq. yd.

2,000 sq. yd.

5,000 sq. yd.

10,000 sq. yd.

6″ Deep

28 tons

57 tons

142 tons

283 tons

567 tons

1,417 tons

2,833 tons

8″ Deep

38 tons

76 tons

189 tons

378 tons

756 tons

1,889 tons

3,778 tons

10″ Deep

47 tons

94 tons

236 tons

472 tons

944 tons

2,361 tons

4,722 tons

12″ Deep

57 tons

113 tons

283 tons

567 tons

1,133 tons

2,833 tons

5,667 tons

This information is not to be taken as warranty or representation for which we assume legal responsibility nor as permission or recommendation to practice any patented invention without a license. It is offered solely for your consideration, investigation and verification. Please refer to the Material Safety Data Sheet on this product for more safety information.